Osteoarthritis is the most common form of arthritis. It is a degenerative disease caused by the breakdown of the hyaline cartilage on the end of bones that meet together to form joints. Osteoarthritis is the most common form of arthritis. It is a degenerative disease caused by the breakdown of the hyaline cartilage on the end of bones that meet together to form joints. Billions of dollars are spent annually in its treatment and for lost days of work. The exact cause of...